. . . "CANTON ?? Susan K. Willson, County Route 27, believes she??s discovered a stylish way to keep outdoor cats from killing backyard birds.She has launched a study to prove that brightly colored fabric collars for cats are effective at keeping feathered friends away from felines.??Cats kill all kinds of birds,?? said Ms. Willson, an associate biology professor at St. Lawrence University. ??The ones I?" .